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# A car dealership has 40 cars on the lot, 30% of which are

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Manager
Status: And the Prep starts again...
Joined: 03 Aug 2010
Posts: 137
A car dealership has 40 cars on the lot, 30% of which are [#permalink]

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30 Sep 2012, 22:59
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A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%
[Reveal] Spoiler: OA

Last edited by Bunuel on 01 Oct 2012, 07:56, edited 1 time in total.
Renamed the topic.
Senior Manager
Joined: 11 May 2011
Posts: 361
Location: US
Re: A car dealership has 40 cars on the lot, [#permalink]

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01 Oct 2012, 00:00
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!
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Intern
Joined: 22 Oct 2012
Posts: 19
Re: A car dealership has 40 cars on the lot, [#permalink]

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25 Nov 2012, 19:58
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit
Math Expert
Joined: 02 Sep 2009
Posts: 39672
Re: A car dealership has 40 cars on the lot, [#permalink]

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26 Nov 2012, 02:11
R26 wrote:
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit

No typo there. We are told that 40% of 80 cars are NOT silver, thus remaining 60% are silver.

A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

The number of silver cars is 0.3*40+0.6*80=60, which is 60/(40+80)=1/2=50% of total number of cars.

Answer: E.

Hope it's clear.
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Intern
Joined: 22 Oct 2012
Posts: 19
Re: A car dealership has 40 cars on the lot, [#permalink]

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26 Nov 2012, 02:25
Bunuel wrote:
R26 wrote:
Capricorn369 wrote:
Number of silver cars before shipment = 30% of 40 = 12
Number of silver cars after shipment = 60% of 80 = 48
Total number of silver cars out of 120 = 48+12 = 60, which is 50%
E is my answer.

Cheers!

There is a typo in the question... It s said to be 40% of the 80 received that are silver and in your calculation you ve used 60%...
So i stucked at 36.67% which is none of the answers.

Posted from GMAT ToolKit

No typo there. We are told that 40% of 80 cars are NOT silver, thus remaining 60% are silver.

A car dealership has 40 cars on the lot, 30% of which are silver. If the dealership receives a new shipment of 80 cars, 40% of which are not silver, what percentage of total number of cars are silver?

A. 35%
B. 37.5%
C. 45%
D. 47.5%
E. 50%

The number of silver cars is 0.3*40+0.6*80=60, which is 60/(40+80)=1/2=50% of total number of cars.

Answer: E.

Hope it's clear.

I read too fast. Sorry, i ll be more careful.
Thank you.
GMAT Club Legend
Joined: 09 Sep 2013
Posts: 15967
Re: A car dealership has 40 cars on the lot, 30% of which are [#permalink]

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28 Mar 2016, 02:43
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: A car dealership has 40 cars on the lot, 30% of which are   [#permalink] 28 Mar 2016, 02:43
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# A car dealership has 40 cars on the lot, 30% of which are

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